# Cycle Tracker: Period Log — Private Ovulation & Fertility

> Private Ovulation & Fertility (iPhone/iPad app by Ricardo Santos.)

- Source: https://appshunter.io/ios/app/cycle-tracker-period-log/id6751967723 (this page in markdown: same URL + `.md`)
- Developer: [Ricardo Santos](https://appshunter.io/developer/1832196791)
- Category: Health & Fitness, Medical
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 29 MB
- Languages: American English, French (France), European Portuguese
- Released: 2026-04-21
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/cycle-tracker-period-log/id6751967723/reviews.md

## What is Cycle Tracker?

Cycle Tracker is a comprehensive menstrual health app designed by Ricardo Santos, MD, PhD — a gynaecologist and reproductive medicine specialist. Clinical rigour meets intuitive design to help you truly understand your body.

 DETAILED CYCLE TRACKING
• Log menstruation, spotting, cervical mucus, basal body temperature, LH surge tests, and intercourse
• Visual calendar with colour-coded events and predicted fertile windows
• Track 15+ physical and emotional symptoms with light, moderate, and heavy severity levels
• Customisable cycle and period length settings

 PREDICTIONS & ANALYTICS
• Predictions calculated from your own cycle history, not population averages
• Cycle regularity assessment and length trend analysis
• Historical pattern recognition across multiple cycles
• Personalised insights based on your unique data

 PRIVACY FIRST
• All data stored locally on your device — never shared, never uploaded
• Optional biometric authentication (Face ID / Touch ID)
• No advertising, no data collection, no third-party access
• Complete offline functionality

 SHARING & EXPORT
• Share encrypted cycle data securely with your doctor via QR code
• Export your data as JSON for healthcare consultations and backups
• Optional Apple Health integration

 SMART NOTIFICATIONS
• Customisable reminders for upcoming periods
• Ovulation and fertile window alerts
• Notification settings fully under your control

 DESIGNED FOR EVERYONE
• Available in English, Portuguese, and French
• Full dark mode support
• Accessible and inclusive design

Cycle Tracker was developed with the clinical care your reproductive health deserves. Whether you are monitoring your cycle, planning a pregnancy, or simply learning your body's patterns — this app gives you the tools to do it right.

IMPORTANT
Cycle Tracker is a tracking and educational tool, not a medical device. Predictions are statistical estimates calculated from the cycle history you enter — they are not a diagnosis and must not be used as a method of contraception or to rule out pregnancy. Always speak to your doctor before making any medical decision.

Developed by Ricardo Santos, MD, PhD
Gynaecologist · Reproductive Medicine Specialist
Assistant Professor, University of Porto Faculty of Medicine
Researcher, CINTESIS — Centre for Health Technology and Services Research
Ferticare, Centre for Reproductive Medicine, Braga
Hospital Senhora da Oliveira, Guimarães


## Version history (last 3 releases)

### 1.5.0 — 2026-08-25

New: Dark mode. Choose Light, Dark, or follow your system in Settings > Theme — every screen, chart and calendar adapts.

Also in this release:
• Notification and prediction fixes, including day calculations that are safe across daylight-saving changes
• Calendar day numbers stay readable on every background
• Personal Data (height, weight, date of birth) now saves correctly
• Accuracy and wording corrections throughout

Your data is unaffected and stays on your device.

### 1.4 — 2026-06-18

Stability improvements and bug fixes

### 1.3.3 — 2026-04-21

No release notes.

## More apps by Ricardo Santos

- [IGCalcPT](https://appshunter.io/ios/app/igcalcpt/id6749804503)

All apps by Ricardo Santos: https://appshunter.io/developer/1832196791

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*